Perhaps you should try some spelling variations:
power developpement » power development, power developments, powers development
4 communication » 3 communication, 5.4 communication, de communication
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
typology des » typologie des, typologie der, typology _
des afrique » en afrique, de l'afrique
des soe » des soa, des sols, des sous
soe 4 » boe 4, ioe 4, sos 4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: typology des variation des soe 4 communication a power developpement des afrique.*.